The Specialized Inner tube is a favourite amongst many cyclists. The quality rubber has been relied upon for many miles and over many years. Specialized use a moulded method of construction, ensuring a consistent thickness of butyl. The Specialized inner tube is available in a range of widths and valve lengths to suit most tyre sizes. Specification Weight: 112g A number of valve lengths available Made from butyl rubber Size: 26X1.0/1.25 32MM, 29X1.75-2.4 40MM, 700X20/28 60MM, 700X28/38 48MM, 700X20/28 80MM, 650B/27.5X1.75-2.4 40MM